Perhaps you should try some spelling variations:
employment development » development development, environment development, employment unemployment
special economic » social economic, spatial economics
global economic » global economy, regional economic
legal economic » local economic, regional economic, general economic

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: oecd ((((legal economic) OR (special economic))) OR (global economic)) AND ((employment development) OR (employee development)) (leed) working (paper OR papers).
• The words AND, OR and NOT may confuse the search; try adding quotes: "oecd ((((legal economic) OR (special economic))) or (global economic)) and ((employment development) or (employee development)) (leed) working (paper or papers)".
• Adding a wildcard symbol may retrieve word variants: oecd ((((legal economic) OR (special economic))) or (global economic)) and ((employment development) or (employee development)) (leed) working (paper or papers)*.